KLNG상사모형의 축척효과에 대한 연구

Abstract

The model-ship correlation and extrapolation method are very important factors for the accurate powering performance prediction of full scale vessels. KORDI has performed a series of geosim test in the towing tank to enhance the accuracy of existing extrapolation method. KVLCC and KCS were tested and their scale effect on the form factors was investigated. In addition, KLNG is selected, which is the mixed full-form with high-speed commercial vessels. Four different scaled model-ships for each hull form were manufactured and resistance test were performed. CFD computation were also performed for the corresponding scales. Resistance characteristics and form factor were analyzed based on the ITTC 1957 model-ship correlation line and ATTC friction line to investigate the scale effect on the form factor. Resistance coefficients and form factors with different friction line and different method will be presented. Also the resistance characteristics for full scale ship based on the so called 2-dimensional and 3-dimensional methods from different scaled model-ships will be compared.y of existing extrapolation method. KVLCC and KCS were tested and their scale effect on the form factors was investigated. In addition, KLNG is selected, which is the mixed full-form with high-speed commercial vessels. Four different scaled model-ships for each hull form were manufactured and resistance test were performed. CFD computation were also performed for the corresponding scales. Resistance characteristics and form factor were analyzed based on the ITTC 1957 model-ship correlation line and ATTC friction line to investigate the scale effect on the form factor. Resistance coefficients and form factors with different friction line and different method will be presented. Also the resistance characteristics for full scale ship based on the so called 2-dimensional and 3-dimensional methods from different scaled model-ships will be compared.